Hello arduino friends.I created a project to control all IR devices or bluetooth devices from android.I do not need 3 or 4 remote controls on my table.I use only my android smartphone.For this help arduino for convert bluetooth signals to IR pulses signals for control my devices.Android application you can download from Google Play Market https://play.google.com/store/apps/details?id=power.remote.controlAndroid send bluetooth signals to arduino + bluetooth shield and arduino with IR LED send IR pulses signals to IR receiver device.This is my test sketch for arduino board.... http://www.power7.net/apk_file/Blue_Remote_Control_V1_0.pde

Hello Arduino friends.I created a new android application to control your aquarium systems.Android sends bluetooth signal to Arduino with Bluetooth module to control Valve open/close.Also receives data to read the PH of water inside the aquarium.Sends ValveOpen,ValveClose to Arduino.For receive PH sends r or c for read continously.You can download it from Google Play Market https://play.google.com/store/apps/details?id=power.aquarium.controllerThanks.

I've just received a HC-07 breakout board. In your picture I see that you didn't use a voltage divider for the RX line of the HC-07 so you drive it with 5V...right? This device does not seem to be 5V tolerant, and it is written on the back of that board to use 3.3V for RX line. So, I'm just wondering, did you have any problems running it as pictured ?

I'm unsure if I should bother using a voltage divider or something. I don't find many infos about those modules.

Hello friends,I am working on a project of home automation in which i want to send the output of a sensor wirelessly to a central arduino uno board.How to do this? How to make the sensors wireless ?Please help.Please guide in details.I am a beginner.

Can you tell me the distance between sensor and central arduino?You can use Arduino + Sensor + Bluetooth module and Arduino+Bluetooth module central as receiver.Another way for more range >10 m and cheap is the RF link.